Finding the Fourth Proportional to 3,847.91, 5,308.37 and 2,355.23

Step by Step Solution

1. Step 1: Write the proportion equation
   3,847.91 : 5,308.37 = 2,355.23 : x
2. Step 2: Convert to fraction form
   3,847.91/5,308.37 = 2,355.23/x
3. Step 3: Cross multiply
   3,847.91x = 5,308.37 × 2,355.23
4. Step 4: Simplify right side
   3,847.91x = 12,502,411.62
5. Step 5: Solve for x
   x = 12,502,411.62/3,847.91
6. Step 6: Final answer
   x = 3,249.15